Pen



FIG. 1 is a front left view of the pen;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is back right view thereof with the cap removed.

The broken lines on the bottom and inside of the clip in FIGS. 6 and 8 are included for the purpose of showing features that form no part of the claimed design. 

CLAIM The ornamental design for a pen, as shown and described. 